DE2461446A1 - IMPACT CURLING DEVICE FOR TEXTURING MULTIFILEM THERMOPLASTIC YARN - Google Patents

Description

-1J7 A VJWA *.! Ξ

K7T "" V ^ * WAiIHR AT 23. ÜSZ. 1974

DR. JUR. HAHS CHR. BhIL

FRANKFURT AM MAlN-HOCHSf

RSSt »

Our no. 19 648 · P / br

Chevron Research Company San Francisco, CaI., V.St.A.

Impact crimping device for texturing multifilament thermoplastic yarn

This invention relates to apparatus for texturing of synthetic thermoplastic yarn. In particular, this invention relates to an improved apparatus for Impingement pucker of thermoplastic yarn.

Synthetic thermoplastic yarn materials are made immediately after manufacture, from continuous straight smooth threads. Such yarns have little bulk, and theirs Usefulness in the manufacture of textiles is quite limited. -

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A variety of crimps have been used in the past to add volume and texture to synthetic yarns procedure has been used. For thermoplastic yarns, a basic technique is to bend and bend the yarn threads heating the yarn while the filaments are in a bent or curled position.

Recently, a fundamental step forward in ^one of texturing scored by thermoplastic yarn. This texturing technique, known as the rebound or impingement pucker process, provides markedly improved results in terms of pucker quality. Impingement crimp requires that the yarn be continuously and evenly thrown by means of a jet of heated fluid against a foraminous surface upon which the yarn impinges and from which it is instantaneously rebounded or rebounded. The impact of the yarn on the perforated surface bends and crimps individual threads of the yarn in the axial direction as the heated medium flows through the perforated surface. The textured yarn moves without tension and essentially by rebound inertia away from the crimp zone and is fed to a collecting station where it is heated and then cooled to set the crimp prior to being wound on a storage spool.

Thermoplastic yarn produced by the above impingement crimping process has been textured, has, among other things, an exceptional coverage capacity and a high degree of Elasticity as shown in U.S. Patent 3,686,848.

The basic procedure and apparatus for The process is described in US Pat. No. 3,665,567 described. This known construction requires, in short, that the yarn through a long, thin tube means

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a steam jet is supplied, and that it is thrown against a perforated, cylindrical attachment which is arranged in a texturing chamber. The yarn is thereby crimped or textured and bounces back sideways exit in.der texturing chamber freely into a tubular passage for conveying the yarn to a container for heat setting. The container includes a first heating zone to heat the textured yarn and a cooling zone below to cool and heat set the crimped or textured yarn. When the textured yarn is thermally set, it is withdrawn linearly from the cooling zone and wound onto a spool for packaging.

Despite the unique advantages offered to the synthetic fiber industry by the aforementioned impact pucker method and apparatus, there still remain Room for substantial improvements to the same. From the point of view of current commercial yarn manufacture For example, a certain irregularity or lack of uniformity is of particular concern in yarns made by the impingement pucker process.

The aforementioned irregularities are at least partially attributable to the design of the texturing chamber. The texturing chamber comprises a long, thin tube for the yarn, which goes through a closed chamber for operating steam, which is formed from a T-piece. The T-piece is connected to a steam pipe by a steam valve so that a large volume of steam, which is selectively regulated by the valve, can be introduced into the closed chamber. The thin pipe goes through completely

+) by one

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the closed steam chamber and ends at the upper end of the passage chamber for the yarn. The closed one Steam chamber is connected to the passage chamber for the yarn so that steam from the closed chamber downwards around the thin Garnrohi * and in the feed-through chamber for the yarn can flow, the yarn being picked up and thrown against a texturing surface.

The yarn is passed through a packing gland at an upper end in a coaxial position with respect to the passage chamber held for the yarn, and a plurality of struts extend from the lower end of the thin tube of yarn to the inner walls of the passage chamber for the yarn.

A large volume of operating steam is desirable in order to impart good crimp properties to the individual threads of the yarn; however, on the other hand, high steam volumes place strong mechanical loads on the thin yarn tube and its imposed lower support struts. Heavy lateral loads caused by steam from the T-piece, but cause the tube to vibrate, or they push the outlet end of the tube in an asymmetrical position with respect to the surrounding passage chamber for the yarn. if this occurs, the yarn at the outlet of the thin yarn tube becomes irregularly flowing, possibly swirling Steam captured. However, such irregularities in the flow behavior of the steam lead to deviations in the threads of the final textured yarn.

As a result, it is highly desirable to have one Impact crimper to feature in high flow rates of steam within the yarn texturing channel can be achieved without at the same time Vibrations, asymmetrical conditions or eddies in the steam flow occur within the yarn texturing channels. 509828/0847

moreover, the aforesaid thin thread tube and restricts the somewhat vulnerable type of attachment, the adjustment of the apparatus to qualified personnel who are able to handle the situation of the thin thread tube to be adjusted visually so that the most beneficial results are obtained. One of those delicate adjustment is time consuming and requires considerable attention, especially at the start of operations of the device when a yarn of different denier is to be textured with respect to a previously completed texturing operation.

This adjustment problem is exacerbated when several units, such as 40 or more, are at the same time Time operated, and each unit must be coordinated with the rest to be an overall uniform To get texturing, as it is required in large-scale operation.

Accordingly, it is highly desirable to have an impact curling device to have available which easily optimally thanks to relatively unskilled personnel in the texturing of yarns of different deniers can be operated.

Another source of yarn irregularities in manufacturing processes, which are performed in an impact crimper according to the prior art, is the alignment the wires of the perforated cylindrical attachment against which the threads are guided. Typically includes the perforated cylindrical top an inverted cup-shaped grid »The grid is made of a mesh Warp and weft wires which are arranged at right angles to each other; as a result of the voltage conditions

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there is a difference in the surface texture during puttering on, which is recognizable when you move your finger over the surface, first in chain and then in Weft direction moved. In one direction the braid is noticeably rougher than in another, and in this one becomes such a direction is referred to as the direction of the rough grating surface. To get the most beneficial texturing during an impact pucker process, the direction of the rough grating surface must run parallel to the axis of the lateral outlet in the texturing chamber. As a result, it is highly desirable to have a foraminous surface available which ensures that the appropriate grid texture is fixed in the correct position within the impact crimping device, so that the proper orientation of the grid is maintained during subsequent texturing. It is further desirable to have a perforated surface which is easy to remove and replace with allows relatively untrained personnel, ensuring a suitable location and alignment of the grid is, do that facilitates subsequent texturing will.

An impingement crimping device according to a preferred embodiment of the invention comprises a yarn texturing chamber, a device for introducing a heated flowing medium, such as steam, into the yarn texturing chamber for drawing yarn into the chamber, a foraminous surface which is transverse to a longitudinal outlet arranged for the medium from the yarn texturing chamber, a device for collecting textured yarn in

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condition practically free of longitudinal tension and a simultaneously removable opening or closing part. which is mounted inside the yarn texturing chamber. That

removable end part with opening. includes one central longitudinal passage which is arranged coaxially with respect to a central longitudinal axis of the yarn texturing chamber is, and a first frustoconical surface on the outside this closing part * for a tight connection with a matching first frustoconical shoulder within the yarn texturing chamber. The closing valve is also provided with a second frustoconical surface on its outer surface, below the first frustoconical surface, which into a mating engages second frustoconical shoulder located within the yarn texturing chamber. The second frustoconical surface on the end part and the second frustoconical shoulder are in operation in one mutually adjacent, but at a distance from one another located position attached so that it is an annular Opening for the steam between the outside of the knock-off part

with "'opening and the inside of the yarn texturing chamber form.

The device for introducing a heated flowing Medium, such as steam, in the yarn texturing chamber is with the chamber in a lateral position between the first and second frustoconical. Flat connected, with steam practically uniformly in a closed chamber within the yarn texturing chamber can be allowed to flow in, which through the inner wall of the yarn texturing chamber, the outer surface of the opening part, the first frustoconical surfaces and the second frustoconical surfaces is delimited, so that steam from the interior of the closed chamber through the annular

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shaped opening and thereby penetrates multifilament thermoplastic yarn through the longitudinal passage of the opening & eil ^s pulls _y, and the yarn is heated and propelled axially against the perforated surface wherein the individual filaments compacted axially and crimped -v / ground.

In a particularly preferred embodiment of the invention Apparatus comprises the perforated surface an upper grid portion which is operable so that it rests on at least part of a support table, and one protruding downwards, with the upper grid surface associated protrusion (locater tab) for connection to the table below, around the upper grid surface to be firmly and securely aligned so that a rough texture thereof lies securely and precisely in a direction which runs parallel to the axis of the lateral outlet of the yarn texturing chamber.

The device according to the invention and the advantages that can be achieved by it are explained in more detail with reference to the following drawings described.

Figure 1 is a front view, partly in elevation, of a synthetic texturing impingement curling device thermoplastic filament yarn;

Figure 2 is a cross-sectional view taken along section line 2-2 in Figure 1 showing an improved yarn texturing nozzle and a lowermost perforated surface according to a preferred embodiment of the invention;

Figure 3 is a detailed view of one side of a easily exchangeable nozzle opening member according to a

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preferred embodiment of the invention;

Figure 4 is a cross-sectional view taken along section line 4-4 in Figure 2 and shows inner and outer completed ones Steam chamber η of the yarn texturing chamber according to a preferred one Embodiment of the invention;

Figure 5 is a bottom plan view of the device of the directional arrow A in Figure 2 and shows a perforated impact ripple surface and an underlying one Support table according to a preferred embodiment of the invention;

Figure 6 is a cross section taken along section line 6-6 in Figure 2 and depicts a plan view of a perforated surface resting on an underlying table is brought into position, according to a preferred embodiment of the invention;

Figure 7 is a detailed cross-sectional view of a perforated element according to a preferred embodiment of the invention; while

FIG. 8 is a view of a perforated element from below from which the direction of the relatively rough texture of the perforated element can be seen.

The improvement of the present invention is particularly related to an impact curling device in accordance with the aforementioned US Pat. No. 3,665,567. Instead of a full reproduction is referred to this patent here,

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The basic impact ripple design of the present However, combination invention can be judged with reference to Figure 1 which is a front view of an impact crimper 10, partly in elevation; shows.

A multifies synthetic thermoplastic yarn 12 is loaded from a supply pack (not shown) onto a first Pair of rollers out, which consists of a driven cup roller and a beveled separation roller 14, and then on a second pair of rollers, which consists of a driven cup roller 20 and a beveled separation roller 18. The cup rollers 16 and 20 can be heated and the rollers 18 and 20 feed the yarn at a much larger rate Speed than the rollers 14 and 16 so that the yarn 12 is pulled between the two sets of rollers.

From the roll 18 the yarn 12 goes to a yarn texturing chamber, generally indicated by the reference number 22 and then into a heating chamber 24 where the yarn is in loose mass, practically free from tension, is heated. The yarn descends through the heating chamber 24 into a Cooling chamber 26, where it is cooled again in bulk and practically free of tension. The yarn 12 is then Pulled out of the cooling chamber 26 in the form of a strand through a pair of rollers 32 and 34 via deflection rollers 27, 28 and 29. From a cup roll. 32 the yarn 12 goes over a deflection roll 36 to a standard winder, where the yarn is wound into a spool 38 for storage and shipping.

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It can be seen from FIG. 2 that the yarn texturing station 22 an adapter housing 40 with a central longitudinal bore. The lower outer end of the adapter housing 40 has a convex shape surrounding the bore 42. An element 44 with a perforated surface, such as a screen, or sieve, closes the lower end opening of the bore 42 for yarn passage while at the same time enables steam to flow out longitudinally through the openings in the grille.

The adapter housing 40 is provided with a coaxial flange 46, which acts as an adapter for connecting the bore 42 with a steam outlet extension 48 is used. By equipping the outlet conduit, the grille 44 passing steam can be extracted by a fan (not shown) *

The texturing station 22 described above is used for texturing or crimping thermoplastic yarn according to the "rebound method". The thermoplastic yarn 12 is drawn into the texturing station, heated by steam, and passed into the bore 42 through an improved opening and improved steam introduction device, which will be described in detail below. The hot steam picks up the yarn 12 and hurls it longitudinally with great force downwards through the bore k2 against the grid 44 at a point closest to the center of the concave grid part. The mass of steam passes through the grid 44 while the yarn instantly rebounds or from the grid 44 in a continuously moving strand-like stream

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- rapidly flowing up and to the left, past a relatively thin side wall 50 within the Adapter housing and into a lateral outlet opening 52.

On the adapter housing ^ iO a hollow cylindrical yarn guide tube 5 ¹ I is held by an enclosing clamp 56; it communicates with the outlet opening 52. The yarn 12 rebounds or rockets from the grating kk back and touches a limiting barrier which are formed from the top wall portion 58 of the adapter housing or the upper surface of the tube 5 ¹ J .can.

The tube 5 ^ is relatively short and provided with a drop wire device 60 which falls across the end of the tube 5 ^ to limit lateral movement of the rebounded yarn. The wire 60 is pulled down about a pivot point 62 by gravity under its own light weight, and it can be easily lifted by the force of the rebound yarn impinging on it, so that the lateral movement of the rebound yarn through the wire 60 is inhibited, whereby the yarn falls into a take-up tube 64 of the aforementioned heating chamber 2k.

The yarn 12 is a multifilament, continuous thermoplastic yarn. As is known, such a yarn is composed of a large number of very thin threads. Occasionally one of these threads can get caught in an opening in the lattice kk. When this occurs, the incident length of the entangled yarn is discharged through the tube% k and tends to hang through an elongated opening 66 in the lowermost part of the pipe 5 I ^1. The length of the

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The hanging loop increases as the yarn feed progresses. A pair of powered take-up rollers 68 and 70 are mounted below the slot 66 and rotate in opposite directions to pull a loosely dangling thread and possibly the entangled portion of the thread out of the grid 44, thereby allowing the yarn texturing process to continue uninterrupted.

As shown in Figure 1, there is the heating chamber 24 from an outer insulation jacket 70, which surrounds a steam chamber 72, which in turn has an inner, cylindrical Yarn treatment chamber 64 includes. The chamber 72 is used to heat the wall around the yarn treatment chamber 64 Allowed steam to circulate, forcibly heating the yarn in the chamber 64. The impact textured Yarn 12 falls into the yarn receiving chamber 64 in a state practically free from longitudinal tension. When the yarn 12 is withdrawn from the cooling chamber 26 by the cup rollers 32 and 34, the slack penetrates Yarn mass within the heating chamber 24 downwards. To further support the yarn heating within the Chamber 64, outlet pipes 76 for warm air are vertically mounted within the chamber 64 and provided with openings, which are located along the longitudinal dimension thereof at regular intervals from one another. From the openings in the drain pipes 76 is heated in the steam chamber 72 Air is blown into the chamber 64 to circulate through the mass of yarn in the chamber 64 and provide even heating of the textured yarn.

What was previously pointed out is immediately below the

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Heating chamber 24 attached to a cooling chamber 26, which the lower leg of a J-tube formed from the heating chamber 24 and the cooling chamber 26. The yarn goes through the cooling chamber 26 in an even looser, unstressed mass. To support the cooling of the yarn are two air vent pipes 78 inside and on opposite sides Sides of the cooling chamber 26 attached. Through the cooling tubes 98 and the openings therein along the Air at room temperature is blown along the length of the tubes and circulates through the yarn mass for cooling and exits through an opening 80 in an upper part of the cooling chamber 26.

Up to this point where the yarn has completely heat set and is cooled, the textured yarn is not subjected to longitudinal tension. As can be seen from Figure 1, the yarn 12 is now withdrawn from the cooling chamber 26 via a deflection device 82 and through an eyelet 84, whereby coarse tangles in the yarn can be resolved. To remove any remaining confusion, are a number of tension wings 86, 88, 90 and 92 are provided » These wings are simply thin sheets of metal that are shaped to close off the chamber, and they are to hinges 94, 96, 98 and 100 rotatably mounted so that they fall against an opposite wall 102 of the chamber.

The untangled yarn goes practically linearly over the Ural swivel rolls 27, 28 and 29 and is passed through tapping rollers 32 and 34 to onto a spool 38 in a conventional manner to be wound up.

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Referring to Figures 2-4, there is an improved jet texturing apparatus 100, which forms part of the yarn texturing station 22, is shown. The improved jet texturing device 100 includes an upwardly extending cylindrical portion 102 of adapter housing 40 and a Easily exchangeable end piece with ■ opening. 104, which is arranged in the interior of the cylindrical projection 102 coaxially.

This part 104 (see. Figure 3) comprises a central, longitudinally extending passage 105 for receiving a yarn to be textured 12. The part 104 is also with a first frustoconical outer surface 106 adjacent an upper end thereof and a second frustoconical Area next to a lower end of the same provided. A conical extension of the first frustoconical Surface 106 is a short distance 110 from a conical extension of the second frustoconical surface 108. This distance forms an annular opening for the flowing steam, such as is set out in detail below.

To come back to Figure 2: The replaceable closure part with opening 104 is designed so that it is received coaxially in the projection 102 of the yarn texturing housing, the first frustoconical surface 106 of the part 104 rests tightly on the first frustoconical shoulder 112, which by machining the inner surface of the cylindrical protrusion 102 was obtained.

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In the projection a cylindrical bore 114 is made, which in a second frustoconical Projection 116 terminates which lies on an extension of the conical surface of shoulder 112. The second truncated cone ' shaped paragraph 116 forms a smooth transition between holes 114 and 42.

The axial extent of the bore 114 is matched to the axial extent of the part 104 so that the second frustoconical surface 108 of the latter close to but is arranged at a distance from the second frustoconical shoulder 116. The low one, between the Second frustoconical surfaces 108 and 110 spacing provided at 118 becomes an annular opening for a uniform introduction of steam into the bore 42.

The part 104 is secured within the cylindrical projection 102 of the yarn texturing housing 40 by an end screw (Backing plug) 120 held rigidly, which is used to guide the thermoplastic yarn 12 in the bore of the terminating part 105 has a central longitudinal opening 122. The end screw 120 has an external thread 124 which goes into the internal thread 126 on the inner surface of the Projection 102 fits. With this screw connection, the end screw 120 can be turned tightly downwards, making abutment with part 104, thereby creating the first and second frustoconical surfaces 106 and 112 are securely and firmly connected to one another.

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If that part. 104, as shown in Figure 2, in the bore 114 of the projection 102 of the Texfcuriergehäuses is mounted in operating position, it forms an inner or first closed steam chamber 128. The inner chamber 128 is bounded by the bore 11 ¹ I of the protrusion 102, a 'outer cylindrical surface 129 of portion 104, first frustoconical surfaces 106 and 112, and second frustoconical surfaces 108 and 116. This inner enclosed steam chamber 128 can be operated to uniformly deliver steam through the annular opening at 118 without a undesirable irregular and / or swirling flow occurs.

To come back specifically to Figures 2 and 4: These show an adapter 130 for a heated medium, which is designed so that it is received on the projection 102 of the texturing housing at a height, which coincides with that of part 104. Of the The heated medium adapter 130 comprises an annular one Housing 132 with a central annular bore 134, which together with the outer surface of the yarn texturing housing 102 is a closed one lying outside the housing Forms steam chamber 135.

The steam is passed through into the closed chamber 135 Adapter-pipe connector 136 of conventional type inserted, which is connected to an operating steam source via a regulating valve -138 (see FIG. 1).

The annular housing 132 is also provided with an upper annular chamber 140 which has a first O-ring seal 142 and a lower annular chamber 144 for receiving a second O-ring 146 Mistake. The upper and lower sealing devices

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serve to ensure that the outer surface of the projection 102 of the texturing housing fits tightly, whereby a passage of Steam from the closed chamber in the environment is prevented.

A plurality of openings 150 extend radially through the projection 102 of the texturing housing and serve to the outer closed steam chamber 135 and the inner closed steam chamber 128 between the part 104 and the Connect bore 114 as previously mentioned.

Accordingly, a large volume of vapor generated by the Regulator valve 138 first enters outer annular closed chamber 135 to reduce shock and a swirling flow and then evenly through the radial passages 150 into the inner closed chamber 128 and from this in a practically uniform and non-swirling manner in the axial direction through the ring-shaped opening introduced at 118, where that too texturizing " Yarn 12 is picked up and thrown evenly longitudinally through the bore 42 against the perforated surface 44.

Due to the lock (slip) on the steam adapter or Splash 130 and the end screw 120, the improved jet texturing device 100 can be easily disassembled and a replaceable drop-in orifice plug 104 of predetermined size Gap 110 provided so that the texturing of a yarn with a selected denier can also be optimally carried out by untrained personnel.

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In FIGS. 5 to 8, a perforated element 44 improved according to the invention is shown. This perforated element 44 comprises a grid _{O (} jer a sieve with a generally rectangular or square surface 154 texturing the yarn and a protrusion or nose 156 protruding downwards.

The perforated area is a mesh made of chain rings and weft wires which are perpendicular to each other; due to the tension during braiding there is a difference in the surface texture which becomes noticeable when you put your finger over the surface first leads in warp and then in weft direction. One direction is noticeably rougher than the other. If the direction the rough texture is aligned parallel to the outlet 52 or to the longitudinal axis of the outlet pipe 54, becomes an optimal one Preserved yarn texturing. If you go over the surface 154 of the texturing grid (see FIG. 8) strokes in the direction of arrow A, the surface feels rougher, as if one sweeps the planar surface of the grid in the direction of arrow B.

The mesh with the improved perforated surface 44 is attached to the base of the adapter 40 of the yarn texturing chamber attached by first placing it on an I58 table with a straight heel or a straight surface I6O and a rectangular opening 162 extending therethrough. The texturing surface 154 of the improved foraminous member 44 is so dimensioned to completely cover opening 162, thereby preventing movement of yarn 12 through the opening,

+) cf. Fig. 6.

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while the steam can pass freely. In order to precisely and securely align the direction of the rough surface of the grille over the opening 162, the tab 15, 156 is bent at right angles to the rough direction A. As shown in Figure 6, the table can then be removed and a new grille kk can be easily inserted and positioned just by engaging the tab 156 in the shoulder 160 of the table. The nose I56 allows the generally rectangular texturing surface 15 ^ to be easily and securely aligned so that the rough texture faces in a direction which coincides with the axis of the outlet port 52 and outlet tube 5 ¹ *, thereby providing optimal texturing during the impact curling process is made possible.

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Claims (2)

Patent claims: to . Aufprallkräuselvomchtung - ^ e * - Texturing of multifilament thermoplastic yarn comprising a yarn texturing housing with an inlet, an -s outlet for a fluid medium, which with the Inlet pina ^ inem 'side yarn outlet a device for introducing a heated flowing medium into the yarn texturing housing, μηι yarn in the Housing to pull, a perforated surface, which is arranged transversely to the outlet of the housing for the medium wherein the heated liquid medium pulls the yarn into the housing against the perforated surface flings, whereby the yarn threads are axially compressed and crimped ^ and the yarn through the side outlet rebounds, as well as a collection device for the crimped yarn, while it is practically free of Longitudinal tension is held, characterized by an opening device which is inside the yarn texturing housing is arranged remotely, and the one Has longitudinal passage which is arranged coaxially with respect to a central longitudinal axis of the yarn texturing housing and serves to hold yarn to be crimped in the yarn texturing housing, a first frustoconical surface on the outside the opening device, which has a first matching frustoconical shoulder in the interior of the yarn texturing housing can be tightly connected, a second frustoconical surface on the outside the opening device below the first frustoconical surface, which is provided with an adapted second ' 509 828/0847 frustoconical shoulder inside the yarn texturing housing cooperates, the second frustoconical surface on the opening device and the second frustoconical paragraph adjacent, but in the Are arranged away from each other and an annular opening between the outside of the opening device and form the inside of the yarn texturing housing; wherein the device for introducing a heated Medium in the texturing housing with this laterally between the first and the second frustoconical Faces connected so that heated medium in a closed chamber inside the Yarn texturing housing can be introduced, which through the inner wall of the yarn texturing housing, the outer surface of the opening device, delimiting the first frustoconical surfaces and the second frustoconical surfaces is, with heated medium exiting the inner closed chamber through the annular opening and thereby Thread pulls through the longitudinal passage of the opening device, this heats and against the perforated surface axially flings with axial compression and crimping of the individual yarn threads. 2. Device according to claim 1, characterized in that the device for introducing the heated medium into the yarn texturing housing includes: an annular housing for the medium, which is adjustable around the yarn texturing housing and, together with the outside of the yarn texturing housing, an annular closed chamber outside around the Yarn texturing housing describes
a first ring seal associated with the annular housing 509828/0847 for the medium connected to a tight connection to bring about with the outer surface of the yarn texturing housing above the outer closed chamber, a second ring seal which is connected to the annular housing for the medium to provide a tight seal Establish communication with the outer surface of the yarn texturing housing below the outer closed chamber , a device for introducing heated medium into the closed housing combi for the medium, and means for radially introducing the medium from the outer closed housing chamber for the medium into the interior of the texturing housing. Device according to claim 1, characterized in that that a table is placed under the perforated surface to support it, and that the perforated Surface an upper part of the grid, which on at least part of the table can be raised and "through the yarn to be textured is allowed to bounce back, while at the same time passage of the heated medium is possible, as well has a downwardly extending nose which connects to the top grille surface for connection to the underlying table and for firm and safe adjustment of the upper grille surface with respect to the lateral outlet of the yarn passage chamber is connected, with the preferred texture of the top grid surface safe and is aligned exactly in a direction parallel to the axis of the lateral yarn outlet of the housing. 50 9 8 28/0847 2A6UA6 Apparatus according to claim 3, characterized in that the table has a right-angled cutout in it Has top surface, which is connected to a straight vertical side edge, which is below the side Outlet lies and extends at right angles to this, and that the grille part in this cutout and corresponds in shape to this if one of the wire sets of the braided grid is parallel runs to the axis of the side outlet, and that furthermore the downward protruding nose into the straight, engages vertical side edge of the table. For: Chevron Research Company Dr.H.J.WoIff 509828/0847 Blank page